Util-linux: util-linux: heap buffer overread in setpwnam() when processing 256-byte usernames
Priority LOW 27CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · High
- Fix status
- Partial Red Hat: 16 fixed, 3 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat.
Summary
A flaw was found in util-linux. This vulnerability allows a heap buffer overread when processing 256-byte usernames, specifically within the `setpwnam()` function, affecting SUID (Set User ID) login-utils utilities writing to the password database.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00215 11th percentileScored 2026-11-07
Fix Partial util-linux (util-linux): 2.41.3Red Hat: 14 advisoriesRed Hat: 16 fixed, 3 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| util-linux | util-linux | before 2.41.3 | 2.41.3 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | 2.40.2-15.el10_1 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.32.1-48.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 2.32.1-48.el8_10 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.37.4-21.el9_7 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 2.37.4-21.el9_7 | Patch available | CNA |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 | — | 1791459707 | Patch available | CNA |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 | — | 1791459711 | Patch available | CNA |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 | — | 1791459759 | Patch available | CNA |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 | — | 1789029076 | Patch available | CNA |
| Red Hat | Cert Manager support for Red Hat OpenShift release 1.18 | — | 1791966259 | Patch available | CNA |
| Red Hat | Red Hat Ceph Storage 7 | — | 1770632724 | Patch available | CNA |
| Red Hat | Red Hat Ceph Storage 8 | — | 1770630907 | Patch available | CNA |
| Red Hat | Red Hat Ceph Storage 9 | — | 1771816028 | Patch available | CNA |
| Red Hat | Red Hat Hardened Images | — | 2.42-7.1.hum1 | Patch available | CNA |
| Red Hat | Red Hat Insights proxy 1.5 | — | 1770740405 | Patch available | CNA |
| Red Hat | Red Hat Update Infrastructure 5 | — | 1770646925 | Patch available | CNA |
| Red Hat | Red Hat Update Infrastructure 5 | — | 1773670073 | Patch available | CNA |
| Red Hat | Red Hat Update Infrastructure 5 | — | 1773672059 | Patch available | CNA |
| Red Hat | Red Hat Update Infrastructure 5 | — | 1773670137 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | No fix listed | CNA |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — | No fix listed | CNA |
- util-linux Vendorutil-linux Affected before 2.41.3 Fixed in 2.41.3 Patch available CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in 2.40.2-15.el10_1 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.32.1-48.el8_10 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 2.32.1-48.el8_10 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.37.4-21.el9_7 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 2.37.4-21.el9_7 Patch available CNA
- Cert Manager support for Red Hat OpenShift release 1.18 VendorRed Hat Affected — Fixed in 1791459707 Patch available CNA
- Cert Manager support for Red Hat OpenShift release 1.18 VendorRed Hat Affected — Fixed in 1791459711 Patch available CNA
- Cert Manager support for Red Hat OpenShift release 1.18 VendorRed Hat Affected — Fixed in 1791459759 Patch available CNA
- Cert Manager support for Red Hat OpenShift release 1.18 VendorRed Hat Affected — Fixed in 1789029076 Patch available CNA
- Cert Manager support for Red Hat OpenShift release 1.18 VendorRed Hat Affected — Fixed in 1791966259 Patch available CNA
- Red Hat Ceph Storage 7 VendorRed Hat Affected — Fixed in 1770632724 Patch available CNA
- Red Hat Ceph Storage 8 VendorRed Hat Affected — Fixed in 1770630907 Patch available CNA
- Red Hat Ceph Storage 9 VendorRed Hat Affected — Fixed in 1771816028 Patch available CNA
- Red Hat Hardened Images VendorRed Hat Affected — Fixed in 2.42-7.1.hum1 Patch available CNA
- Red Hat Insights proxy 1.5 VendorRed Hat Affected — Fixed in 1770740405 Patch available CNA
- Red Hat Update Infrastructure 5 VendorRed Hat Affected — Fixed in 1770646925 Patch available CNA
- Red Hat Update Infrastructure 5 VendorRed Hat Affected — Fixed in 1773670073 Patch available CNA
- Red Hat Update Infrastructure 5 VendorRed Hat Affected — Fixed in 1773672059 Patch available CNA
- Red Hat Update Infrastructure 5 VendorRed Hat Affected — Fixed in 1773670137 Patch available CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat OpenShift Container Platform 4 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 17
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/o:redhat:enterprise_linux:10.1 | 10.1 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8::appstream | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8::crb | 8 | — | Red Hat |
| cpe:/o:redhat:enterprise_linux:8::baseos | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9::appstream | 9 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9::crb | 9 | — | Red Hat |
| cpe:/o:redhat:enterprise_linux:9::baseos | 9 | — | Red Hat |
| cpe:/a:redhat:cert_manager:1.18::el9 | 1.18 | — | Red Hat |
| cpe:/a:redhat:ceph_storage:7::el9 | 7 | — | Red Hat |
| cpe:/a:redhat:ceph_storage:8::el9 | 8 | — | Red Hat |
- cpe:/o:redhat:enterprise_linux:10.1 Versions 10.1 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8::crb Versions 8 — ·Red Hat
- cpe:/o:redhat:enterprise_linux:8::baseos Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9::crb Versions 9 — ·Red Hat
- cpe:/o:redhat:enterprise_linux:9::baseos Versions 9 — ·Red Hat
- cpe:/a:redhat:cert_manager:1.18::el9 Versions 1.18 — ·Red Hat
- cpe:/a:redhat:ceph_storage:7::el9 Versions 7 — ·Red Hat
- cpe:/a:redhat:ceph_storage:8::el9 Versions 8 — ·Red Hat
Show 7 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:ceph_storage:9::el10 | 9 | — | Red Hat |
| cpe:/a:redhat:hummingbird:1 | 1 | — | Red Hat |
| cpe:/a:redhat:insights_proxy:1.5::el9 | 1.5 | — | Red Hat |
| cpe:/a:redhat:rhui:5::el9 | 5 | — | Red Hat |
| cpe:/o:redhat:rhel_els:6 | 6 | — | Red Hat |
| cpe:/o:redhat:rhel_els:7 | 7 | — | Red Hat |
| cpe:/a:redhat:openshift:4 | 4 | — | Red Hat |
- cpe:/a:redhat:ceph_storage:9::el10 Versions 9 — ·Red Hat
- cpe:/a:redhat:hummingbird:1 Versions 1 — ·Red Hat
- cpe:/a:redhat:insights_proxy:1.5::el9 Versions 1.5 — ·Red Hat
- cpe:/a:redhat:rhui:5::el9 Versions 5 — ·Red Hat
- cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
- cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:openshift:4 Versions 4 — ·Red Hat
Remediation
- Fix · CNA util-linux (util-linux) Fixed in 2.41.3
Red Hat 14 advisories
- RHSA-2026:82857 Released 2026-10-14 · Red Hat rating Importantcert-manager Operator for Red Hat OpenShift 1.18.2
- Cert Manager support for Red Hat OpenShift release 1.18 registry.redhat.io/cert-manager/cert-manager-operator-bundle
- RHSA-2026:82372 Released 2026-10-13 · Red Hat rating Importantcert-manager Operator for Red Hat OpenShift 1.18.2
- Cert Manager support for Red Hat OpenShift release 1.18 registry.redhat.io/cert-manager/cert-manager-operator-rhel9
- RHSA-2026:82354 Released 2026-10-13 · Red Hat rating Importantcert-manager Operator for Red Hat OpenShift 1.18.2
- Cert Manager support for Red Hat OpenShift release 1.18 registry.redhat.io/cert-manager/cert-manager-istio-csr-rhel9
Show 11 more Red Hat advisories
- RHSA-2026:82347 Released 2026-10-13 · Red Hat rating Importantcert-manager Operator for Red Hat OpenShift 1.18.2
- Cert Manager support for Red Hat OpenShift release 1.18 registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9, registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9
- RHSA-2026:7180 Released 2026-04-09 · Red Hat rating ModerateRed Hat Hardened Images RPMs bug fix and enhancement update
- Red Hat Hardened Images util-linux-2.42-7.1.hum1@aarch64, util-linux-2.42-7.1.hum1@src, util-linux-2.42-7.1.hum1@x86_64 +6
- RHSA-2026:4943 Released 2026-03-18 · Red Hat rating ImportantRed Hat Update Infrastructure 5.1 security update
- Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9, registry.redhat.io/rhui5/installer-rhel9 +1
- RHSA-2026:3406 Released 2026-02-26 · Red Hat rating ImportantNew container image: rhceph-9.0
- Red Hat Ceph Storage 9 registry.redhat.io/rhceph/grafana-rhel10, registry.redhat.io/rhceph/rhceph-9-rhel9
- RHSA-2026:2800 Released 2026-02-17 · Red Hat rating ImportantRed Hat Ceph Storage
- Red Hat Ceph Storage 7 registry.redhat.io/rhceph/grafana-rhel9, registry.redhat.io/rhceph/rhceph-7-rhel9
- RHSA-2026:2737 Released 2026-02-16 · Red Hat rating ImportantRed Hat Ceph Storage
- Red Hat Ceph Storage 8 registry.redhat.io/rhceph/grafana-rhel9, registry.redhat.io/rhceph/rhceph-8-rhel9
- RHSA-2026:2563 Released 2026-02-11 · Red Hat rating ImportantRed Hat Update Infrastructure 5 security update
- Red Hat Update Infrastructure 5 registry.redhat.io/rhui5/cds-rhel9, registry.redhat.io/rhui5/haproxy-rhel9, registry.redhat.io/rhui5/installer-rhel9 +1
- RHSA-2026:2485 Released 2026-02-10 · Red Hat rating ImportantInsights proxy Container Image
- Red Hat Insights proxy 1.5 registry.redhat.io/insights-proxy/insights-proxy-container-rhel9
- RHSA-2026:1913 Released 2026-02-04 · Red Hat rating Moderateutil-linux security update
- Red Hat Enterprise Linux AppStream (v. 9) libblkid-devel-2.37.4-21.el9_7, libmount-devel-2.37.4-21.el9_7, libuuid-devel-2.37.4-21.el9_7 +2
- Red Hat Enterprise Linux BaseOS (v. 9) libblkid-2.37.4-21.el9_7, libfdisk-2.37.4-21.el9_7, libmount-2.37.4-21.el9_7 +5
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) libfdisk-devel-2.37.4-21.el9_7, libsmartcols-devel-2.37.4-21.el9_7
- RHSA-2026:1852 Released 2026-02-04 · Red Hat rating Moderateutil-linux security update
- Red Hat Enterprise Linux AppStream (v. 8) python3-libmount-2.32.1-48.el8_10
- Red Hat Enterprise Linux BaseOS (v. 8) libblkid-2.32.1-48.el8_10, libblkid-devel-2.32.1-48.el8_10, libfdisk-2.32.1-48.el8_10 +9
- Red Hat Enterprise Linux CRB (v. 8) libmount-devel-2.32.1-48.el8_10
- RHSA-2026:1696 Released 2026-02-02 · Red Hat rating Moderateutil-linux security update
- Red Hat Enterprise Linux AppStream (v. 10) libblkid-devel-2.40.2-15.el10_1, libmount-devel-2.40.2-15.el10_1, libuuid-devel-2.40.2-15.el10_1 +2
- Red Hat Enterprise Linux BaseOS (v. 10) libblkid-2.40.2-15.el10_1, libfdisk-2.40.2-15.el10_1, libmount-2.40.2-15.el10_1 +4
- Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) libfdisk-devel-2.40.2-15.el10_1, libsmartcols-devel-2.40.2-15.el10_1
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat OpenShift Container Platform 4 | Affected | No fix planned: Will not fix |
| Cert Manager support for Red Hat OpenShift release 1.18 | Fixed | RHSA-2026:82347, RHSA-2026:82354, RHSA-2026:82372, RHSA-2026:82857 |
| Red Hat Ceph Storage 7 | Fixed | RHSA-2026:2800 |
| Red Hat Ceph Storage 8 | Fixed | RHSA-2026:2737 |
| Red Hat Ceph Storage 9 | Fixed | RHSA-2026:3406 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:1696 |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2026:1852 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2026:1913 |
| Red Hat Enterprise Linux BaseOS (v. 10) | Fixed | RHSA-2026:1696 |
| Red Hat Enterprise Linux BaseOS (v. 8) | Fixed | RHSA-2026:1852 |
| Red Hat Enterprise Linux BaseOS (v. 9) | Fixed | RHSA-2026:1913 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2026:1852 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) | Fixed | RHSA-2026:1696 |
| Red Hat Enterprise Linux CodeReady Linux Builder (v. 9) | Fixed | RHSA-2026:1913 |
| Red Hat Hardened Images | Fixed | RHSA-2026:7180 |
| Red Hat Insights proxy 1.5 | Fixed | RHSA-2026:2485 |
| Red Hat Update Infrastructure 5 | Fixed | RHSA-2026:2563, RHSA-2026:4943 |
Not affected: 5 products
- Red Hat Ceph Storage 7
- Red Hat Ceph Storage 8
- Red Hat Ceph Storage 9
- Red Hat Hardened Images
- Red Hat Update Infrastructure 5
Timeline
- 2026-10-02 Threatist record created from CVE-2025-14104
- 2026-10-03 Alias added: GHSA-hrx4-rccm-xj6c
- 2026-10-14 Fix available: cert-manager/cert-manager-istio-csr-rhel9@1791459759, cert-manager/cert-manager-operator-rhel9@1789029076, cert-manager/jetstack-cert-manager-acmesolver-rhel9@1791459707 +1 · CNA
- 2026-10-14 3 new references · CNA
- 2026-10-14 Fix available: RHSA-2026:82372 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82354 · Red Hat
- 2026-10-14 Fix available: RHSA-2026:82347 · Red Hat
- 2026-10-15 Fix available: RHSA-2026:82857 · Red Hat
- 2026-10-15 Fix available: cert-manager/cert-manager-operator-bundle@1791966259 · CNA
- 2026-10-15 1 new reference · CNA
- 2026-10-16 Fix available: Cert Manager support for Red Hat OpenShift release 1.18 · Red Hat
References
More util-linux vulnerabilities
- TI-2026-53553 util-linux libmount Privilege Escalation via Failed Mount Helper CVSS 4.0HIGH 8.5
- TI-2026-73994 Race condition in util-linux mount hook allows privilege escalation CVSS 3.1HIGH 7.0
- TI-2026-74163 Integer overflow in util-linux libblkid DOS extended partition parsing CVSS 3.1HIGH 8.0
- TI-2026-73996 util-linux LIBMOUNT_FORCE_MOUNT2 allows nosuid and noexec bypass CVSS 3.1HIGH 7.0
- TI-2026-73995 Race condition in util-linux mount lets local users gain root CVSS 3.1HIGH 7.0
Sources
- CVE-2025-14104 · CVE Program
- CVE-2025-14104 · NVD
- FIRST EPSS
- GHSA-hrx4-rccm-xj6c · GitHub Advisory Database · CC BY 4.0
- CVE-2025-14104 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences